/*
* created by Administrator on 2018/11/30
* 好的代码像粥一样,是得用时间和精力熬的。
*/

let arr = new Array(5*1024*1024);
var m1 = new Map();
m1.set(arr, 1);
arr = null;

let arr = new Array(5*1024*1024);
var m2 = new WeakMap();
m2.set(arr, 1);
arr = null;



